Improvement in lubricators



C. 'H. PARSHALL.

LUBRICATOR.

Patented June 5,1877.

v INVENTOR ATTORNEYS N. PETERS. FHDTO-UTHOGRAPHER, WASHINGTON, D C.

PATENT QFFICE.

CHARLES H. PARSHALL, OF DETROIT, MICHIGAN.

IMPROVEMENT IN LUBRICATORS.

Specification forming part of Letters Patent No. 191,707, dated June 5,1877; application filed April 23, 1877.

To all whom it may concern:

Be it known that I, CHAS. H. PARSHALL, of Detroit, in the county ofWayne and State of Michigan, have invented certain new and usefulImprovements in Lubricators; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the artto which it pertains to make and use it,reference being had to the accompanying drawings, which form part ofthis specification.

My invention relates to certain improvements in lubricators; andconsists in providing a water-seal within the body of acondensing-chamber, which will prevent the inflow of oil into thelatter, while free communication for the water to pass therefrom intothe oilcup is allowed. This water seal or trap is constructed as a smallchamber on the inside of the condenser, opposite to the 'stem by whichthe lubricator is supported, and has a vertical central partition withinit, while it has openings, respectively, into the condensing and the oilchambers on either side of the partition.

By such a construction space-room is economized, which, in smalllubricators, is a very essential feature, allowing the oil-cup to carrya much larger quantity of the lubricant, and

a double result is secured, in that, at the same time, the oil isprevented from becomin g heated.

In many instances it is well-known that it is most desirable to preservethe lubricant at a degree of temperature less than that which would beimparted to it were the water seal or trap placed in its immediate body,and hence my object to so construct the said seal or trap that it mayprevent such an undue temperature in the oil, and also be especiallyadapted to lubricators of small dimension.

The drawing represents, in vertical central section, a lubricat-or madeaccording to my invention, in which- A is a heavy glass cylinder, seatedin annular flanged shoulders formed in a metallic supporting top andbottom, and held in place by the central hollow metal tube B. Thislatter is made with openings b at suitable intervals in its length,which permit the oil, as it is introduced into the tube through thefeed-opening covered by cap-stopper O, to

flow out into the oil-chamber, while they also serve as exit-openings,for the water to be emptied from the lubricator out through thewaste-cock D.

The supporting-stem E is constructed with independent steam and oilducts Grand H,communicating, respectively, with the condensing andoil-feeding chambers. This stem is connected directly with the mainsteam-pipe K of a steam-engine, while its opposite extremity is securedto the side of the condenser L. A check-valve, M, controls the openingof the oil-duct as it communicates with the oil-chamber, so as toautomatically regulate the volume of oil passing out.

The condenser is made with the cylindrical tube 1, which feeds the oilas it is introduced through the cap-opening down into the binding-tubeB, and, while the supporting-stem E is on one side of this central tubel, a small or auxiliary chamber, N, is on the opposite side. Thischamber has the vertical partition n extending from its bottom up nearlyto its top, but allowing suflicient opening for the water to pass fromone side of the partition over the latter and down the other side.Hand-valve P controls the opening p, which admits water into thewater-seal chamber, while the opening 10 into the oil-chamber isprovided with the angular dischargepipe B. This latter consists of ashort vertical section and a longer obliquely-inclined section, and asthe steam is condensed, and afterward passed through the seal or trapchamber down into pipe B, it is discharged by the latter, so as topercolate in drops down' along the side of the glass cylinder as itfalls through the oil and into the lower portion of the cup. The side ofthe glass cylinder thus serves as an indicatinggage of the feeding ofthe oil, whether faster or slower, and the oil is prevented from passingin the chamber N down into the passage 8 farther than the top of thepartition n. Thus the superior specific gravity of water causes thelatter to fall down through the body of the oil, thus displacing thesame, and forcing it up through the angular pipe R into the passage 8 ofthe water-seal.

The light specific gravity of oil renders it impossible for the latterto pass down through the body of water always filling the passage 8 ofthe seal-chamber, and hence is prevented from ever entering thecondenser and mixing its contents with oil. The oil in the cup is thuskept from becoming heated by the greater temperature of the warm wateras it is condensed from the steam, and at the same time the constructionis peculiarly fitting to small lubricators.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The water seal or trap formed within the immediate body of thecondensingchamber, and directly connecting the same with the oilfeedingchamber, substantially as described.

2. The combination, with the water-seal located directly within thecondensing-cham- CHARLES H. PARSHALL.

Witnesses:

WM. JOHNS, Jr., WM. M. DALY.

